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Elena-2011 [213]
3 years ago
10

Problem 6

Mathematics
1 answer:
Leno4ka [110]3 years ago
3 0

Answer:

8 rabbits

22 chickens

Step-by-step explanation:

c = chickens

r = rabbits

heads - c + r = 30

legs - 2c + 4r = 76

We can now use these two equations to create one by isolating the variable (c) in the first equation.

c = 30 - r

2c + 4r = 76

2(30 - r) + 4r = 76

60 - 2r + 4r = 76

2r = 16

r = 8

Now we know that there are 8 rabbits, which means that there has to be 22 chickens in order to have 30 heads.

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"I think of a number, take away 1 and multiply the result by 3."​
iogann1982 [59]

Answer:

I got 6.

Step-by-step explanation:

I picked my number to be 3. I took away 1 to make it 2. I then multiplied 2 by 3, to get 6.

3 0
3 years ago
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Write the equation of a circle in standard form for the following:
max2010maxim [7]
<h2><u>Circle Equations</u></h2>

<h3>Write the equation of a circle in standard form for the following:</h3><h3>x² − 14x + 49 + y² + 4y = 0</h3>

To write the general form of a circle into standard form, use the formula

<em>(x - h)² + (y - k)² = r²</em>

Where,

<u>(h, k)</u> is the center; and

<u>r</u> is the radius

To transform general form to standard form, group the terms that has the same variables. Replace 0 with the constant term.

  • x² - 14x + 49 + y² + 4y = 0
  • (x² - 14x) + (y² + 4y) = -49

Next step is to complete the square of each equation inside the parentheses.

  • (x² - 14x) + (y² + 4y) = -49
  • (x² - 14x - 49) + (y² + 4y + 2) = -49 - 49 + 2

Then factor each equation inside the parentheses.

  • (x² - 14x - 49) + (y² + 4y + 2) = -49 - 49 + 2
  • (x - 7)² + (y + 2)² = √2
  • (x - 7)² + (y + 2)² = 4

<u>Answer:</u>

  • The standard form of the circle is <u>(x - 7)² + (y + 2)² = 4</u>.

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2 years ago
What is the midpoint of the segment shown below?
Snezhnost [94]

The midpoint of the segment shown below is (1, -3/2). Option A) is the correct answer.

<u>Step-by-step explanation</u>:

The two end points of the line segments are (1,2) and (1,-5).

<u>step 1</u> :

Midpoint formula = ((x1 + x2)/2 , (y1 +y 2)/2)

<u>step 2</u> :

(x1, y1) = (1, 2)

(x2, y2) = (1, -5)

<u>step 3</u> :

Substitute the values in the midpoint formula,

Midpoint = ((1 + 1)/2 , (2 -5)/2)

                = ((2/2) , (-3/2))

                = (1, -3/2)

5 0
3 years ago
Use the order of operations to evaluate 5+4×2<br>solve.
Anon25 [30]
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Hey can u help me with this ​
Liula [17]

Answer:

24 cubes

Step-by-step explanation:

First, we need to find the volume of the prism. To do this, we multiply the length by the width by the height, so 1 \cdot 2 \cdot \frac {3}{2} = 3. Then, we need to find the volume of one small cube, which has a length, width, and height of \frac {1}{2}, so \frac {1}{2} \cdot \frac {1}{2} \cdot \frac {1}{2} = \frac {1}{8}. Then we divide the volume of the prism by the volume of a cube to find how many could fit, so 3 \div \frac {1}{8} = 24.

8 0
3 years ago
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